Description
A flaw was found in moodle. During anonymous assignment submissions, user identifiers were inadvertently exposed in URLs. This data exposure allows unauthorized viewers to see internal user IDs, compromising the intended anonymity and potentially leading to information disclosure.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | moodle | 4.1.0 – < 4.1.22, 4.4.0 – < 4.4.12, 4.5.0 – < 4.5.8, 5.0.0 – < 5.0.4, 5.1.0 – < 5.1.1 | 4.1.22 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | moodle | No fix yet | — |
| Ubuntu Pro 16.04 LTS | moodle | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | moodle/moodle | < 4.1.22 | 4.1.22 | GHSA-8jrv-wx83-w3xj |
| Packagist | moodle/moodle | >= 4.4.0-beta, < 4.4.12 | 4.4.12 | GHSA-8jrv-wx83-w3xj |
| Packagist | moodle/moodle | >= 4.5.0-beta, < 4.5.8 | 4.5.8 | GHSA-8jrv-wx83-w3xj |
| Packagist | moodle/moodle | >= 5.0.0-beta, < 5.0.4 | 5.0.4 | GHSA-8jrv-wx83-w3xj |
| Packagist | moodle/moodle | >= 5.1.0-beta, < 5.1.1 | 5.1.1 | GHSA-8jrv-wx83-w3xj |
Advisories 1
- WID-SEC-2025-2851 Moodle: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 3, 2026